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3 years ago

Write 80% as a decimal. I help me??

Mathematics

1 answer:

Ghella [55]3 years ago

6 0

Answer:

0.8

Step-by-step explanation:

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Please help me with this question!!

Mama L [17]

Answer:

$=\pi$

Step-by-step explanation:

$\int _0^{2\pi }\sin ^2\left(x\right)-\cos ^3\left(x\right)dx$

compute the indefinite integral

$\int \sin ^2\left(x\right)-\cos ^3\left(x\right)dx=\frac{1}{2}x-\frac{1}{4}\sin \left(2x\right)-\sin \left(x\right)+\frac{1}{3}\sin ^3\left(x\right)+C\\\int \sin ^2\left(x\right)-\cos ^3\left(x\right)dx\\\mathrm{Apply\:the\:Sum\:Rule}:\quad \int f\left(x\right)\pm g\left(x\right)dx=\int f\left(x\right)dx\pm \int g\left(x\right)dx\\\int \sin ^2\left(x\right)dx=\frac{1}{2}\left(x-\frac{1}{2}\sin \left(2x\right)\right)\\\int \cos ^3\left(x\right)dx=\sin \left(x\right)-\frac{\sin ^3\left(x\right)}{3}$

$=\frac{1}{2}\left(x-\frac{1}{2}\sin \left(2x\right)\right)-\left(\sin \left(x\right)-\frac{\sin ^3\left(x\right)}{3}\right)\\\mathrm{Simplify\:}\frac{1}{2}\left(x-\frac{1}{2}\sin \left(2x\right)\right)-\left(\sin \left(x\right)-\frac{\sin ^3\left(x\right)}{3}\right):\quad \frac{1}{2}x-\frac{1}{4}\sin \left(2x\right)-\sin \left(x\right)+\frac{1}{3}\sin ^3\left(x\right)\\=\frac{1}{2}x-\frac{1}{4}\sin \left(2x\right)-\sin \left(x\right)+\frac{1}{3}\sin ^3\left(x\right)\\Add\:a\:constant\:to\:the\:solution$

$=\frac{1}{2}x-\frac{1}{4}\sin \left(2x\right)-\sin \left(x\right)+\frac{1}{3}\sin ^3\left(x\right)+C\\\mathrm{Compute\:the\:boundaries}:\quad \int _0^{2\pi }\sin ^2\left(x\right)-\cos ^3\left(x\right)dx=\pi -0\\=\pi -0\\\mathrm{Simplify}\\=\pi$

7 0

3 years ago

Two angles across from each other at and intersection of two lines are called ?

Marina CMI [18]

Answer:

Vertical angles

Step-by-step explanation:

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3 years ago

Find the work done lifting a 290-pound weight 28 feet in the air.

IgorLugansk [536]

The work may be calcualted as the differential of potencial energy or as the product of the force x the distance. The result is the same.

T = weight x height

T = 290 pound * 28 feet = 8120 foot-pound

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To which subsets of the real numbers does the following number belong? square root of seven

alexandr402 [8]

Answer: this might be wrong well we all know it’s is going to be wrong but let’s give it a shot so I am probably going to go with answer C

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3 years ago

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Find the value of each variable. If your answer is not an integer, express it in simplest radical form.

Butoxors [25]

Recognize that these are isosceles right triangles, so the legs are equal and the hypotenuse is √2 times the leg length.

1. x=9, y=9√2

3. x=20, y=20√2

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3 years ago